<!DOCTYPE html>
<!--
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and open the template in the editor.
-->
<html>
    <head>
        <meta charset="UTF-8">
        <title></title>
    </head>
    <body>
        <?php
        $feavir="black";
        switch ($feavir){
            case "red";
                echo "你输出的颜色是红色";
                break;
                case "blue";
                    echo "你输出的颜色是蓝色";
                    break;
                    case "green";
                   echo "你输出的颜色是蓝色";
                    break;    
            default:   
               echo "你输出的颜色不是蓝色、绿色、蓝色！";
                        
        }
        ?>
    </body>
</html>
